• KSII Transactions on Internet and Information Systems (TIIS)
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• 제15권7호
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• pp.2513-2530
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• 2021

With the fast development of information and communication technologies, video streaming services and applications are increasing rapidly. However, the network condition is volatile. In order to provide users with better quality of service, it is necessary to develop an accurate and low-complexity model for Quality of Experience (QoE) prediction of time-varying video. Memory effects refer to the psychological influence factor of historical experience, which can be taken into account to improve the accuracy of QoE evaluation. In this paper, we design subjective experiments to explore the impact of Short-Term Memory (STM) on QoE. The experimental results show that the user's real-time QoE is influenced by the duration of previous viewing experience and the expectations generated by STM. Furthermore, we propose analytical models to determine the relationship between intrinsic video quality, expectation and real-time QoE. The proposed models have better performance for real-time QoE prediction when the video is transmitted in a fluctuate network. The models are capable of providing more accurate guidance for improving the quality of video streaming services.

• 한국콘텐츠학회논문지
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• 제17권8호
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• pp.693-704
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• 2017

본 연구는 요양병원 간호인력이 실무현장에서 겪는 폭력경험과 감성지능 정도가 간호서비스 질에 주는 영향을 분석한 서술적 연구이다. 연구 대상은 G도와 C도 지역의 9개 요양병원 간호인력 167명으로, 설문지를 통해 수집된 자료를 SPSS 23.0를 이용하여 분석하였다. 연구 결과, 폭력경험은 항목별로 일부 변동은 보였으나 언어적 폭력, 신체적 위협, 신체적 폭력의 순으로 경험하는 것으로 나타났다. 폭력경험과 감성지능의 간호서비스 질에 대한 영향정도를 규명하기 위한 위계적 회귀분석 결과, 일반적 특성을 통제한 상태에서 폭력경험은 서비스 질에 유의한 영향을 미치지 못하였으나 감성지능은 간호서비스 질에 대해 유의한 영향력을 보였다. 본 연구 결과 비록 통상적으로는 폭력경험이 간호서비스 질을 위협하는 요인으로 간주되고 있으나 자신의 감성을 활용하고 조절할 수 있는 감성지능이 실제 더 중요한 서비스 질의 영향요인인 것으로 나타났다. 이러한 감성지능은 교육과 훈련으로 향상될 수 있으므로 감성지능 향상을 위한 다양한 프로그램 개발 등의 방안 모색이 필요하다.

• 한국프랜차이즈경영연구
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• 제11권1호
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• pp.19-29
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• 2020

Purpose - To understand the assessment basis of customers' coffee shop experience and give more practical advices to the franchised coffee shops which are poorly managed in the competitive market, this study identified factors to measure the quality of customer experience and explored the relationship between these factors and customer satisfaction and loyalty. Further, this study analyzed which role self-efficacy played in the structural relationship between the quality assessment factors, satisfaction and loyalty of franchised coffee shops. Research design, data, methodology - The data were collected from respondents who had visited franchised coffee shops within the previous month through online survey. The questionnaires were surveyed from February 11 to February 14, 2019. A total of 318 responses were collected after excluding four of incomplete or uncandid responses. A structural equation modeling approach was used to examine the proposed hypothesis and a confirmatory factor analysis was employed to verify the four dimensions of quality assessment. Results - The findings of this study are as follows. First, the three of quality assessment variables significantly influenced on satisfaction except environmental quality. Second, economic and service quality significantly influenced on self-efficacy but environmental and menu quality didn't. Third, satisfaction significantly influenced on loyalty but not on self-efficacy. Fourth, self-efficacy significantly influenced on Loyalty. Conclusions - This study identified the four dimensions to assess the franchised coffee shop service - menu, environment, service and economic quality and verified these four dimensions are valid as indicators to measure the quality of customers' coffee shop experience. Further, by empirically testing the structural relationships among these quality assessment dimensions, satisfaction, self-efficacy and loyalty, this study provided theoretical foundations to explore the relationship between customer and the franchised stores in restaurant businesses. For the industry, the study findings showed that customers highly appreciated menu and economic quality of the service rather than the stores' interior. This indicate that the franchised coffee shops need to focus more on the basics of coffee such as taste and menu variety and economic value than the decoration of the store, which are often over-invested nowadays.

• 품질경영학회지
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• 제37권3호
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• pp.10-17
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• 2009

This study developed a new model for evaluating effects about the success of six sigma activities. This model consists of four constructs such as success of six sigma, employee's success experience, customer satisfaction, and business performance. Structural Equation Modeling (SEM) is used to analyze causality among the four constructs. Hypothesis were tested through a field study conducted for one hundred and thirty-one project leaders, who were asked to evaluate their experiences of six sigma projects. The results indicate that six hypothesis are statistically significant. As a result, the success of six sigma doesn't influence the customer satisfaction directly, but it influences customer satisfaction indirectly through employee's success experience. We find out that control for employee's success experience is important as well as success of six sigma in business innovation. Otherwise business performance is influenced directly by success of six sigma, that is business performance isn't influenced directly by employee's success experience but influenced indirectly through customer satisfaction. This study found that the change management raising employee's success experience is important in Six Sigma.

• International Journal of Computer Science & Network Security
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• 제22권3호
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• pp.252-258
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• 2022

Globalization, development of the information society, intensification of migration processes, and internationalization of education in recent years have significantly affected the international labour market and increased competition between professionals in various fields. Academic, research and teaching staff are currently facing rapid changes and growing demand for quality educational services. Under such conditions, educational institutions around the world pay particular attention to improving the quality of the educational process in order for their graduates to be able to compete in the international labour market. The study of the experience of teachers' professional training in advanced countries opens new opportunities for improving the system of pedagogical training in Ukraine in order to adapt it to the requirements of the European educational space. The progressive achievements of countries demonstrating a high level of teachers' professional training in accordance with international standards, having rich historical educational traditions are of considerable scientific interest; consequently, this contributes to their leadership in science and education at the regional and global levels. The purpose of the present academic paper lies in analysing the latest trends in exploring teaching experience in the European countries and performance review of passing by students and teachers of the program on studying of pedagogical practice and experience of teaching in the countries of Europe. Methodology. Analytical and empirical (questionnaire) methods were used in the research process. Results. According to the obtained results of the research, the advantages, the most common areas of educational programs and the wishes of the participants regarding the practical implementation of the experience were identified.

• 말소리와 음성과학
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• 제15권3호
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• pp.9-16
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• 2023

The current study investigated the influence of age of L2 acquisition (AOA) and length of residence (LOR) in the L2 setting country on the production of voicing-conditioned vowel duration and spectral qualities in English by Korean learners. The primary aim was to explore the ways in which the language-specific phonetic features are acquired by the age of onset and L2 experience. Analyses of the archived corpus data produced by 45 native speakers of Korean showed that, regardless of AOA or LOR, absolute vowel duration was used as a salient correlate of voicing contrast in English for Korean learners. The accuracy of relative vowel duration was influenced more by onset age than by L2 experience, suggesting that being exposed to English at an early age may benefit the acquisition of temporal dimension. On the other hand, the spectral characteristics of English vowels were more consistently influenced by L2 experience, indicating that immersive experience in the L2 speaking environment are likely to improve the accurate production of vowel quality. The distinct influence of the onset age and L2 experience on the specific phonetic cues in L2 vowel production provides insight into the intricate relationship between the two factors on the manifestation of L2 phonological knowledge.

• 한국재난정보학회 논문집
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• 제18권4호
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• pp.713-728
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• 2022

연구목적: 본 연구의 목적은 소방안전체험관에서 안전교육을 담당한 전, 현직 직원을 대상으로 VR 안전체험 교육 콘텐츠 품질이 행동 의도에 미치는 영향을 파악하고 인터뷰를 통해 추가적인 운영 관련 의견을 수집하는 것이었다. 연구방법:소방안전체험관 전·현직 직원 93명을 대상으로 설문을 실시하고 체험관 15개소를 방문하여 인터뷰를 실시하였다. 연구결과: VR 안전체험교육 콘텐츠 품질 중 몰입감과 편리성이 이용 만족도, 추천 의도, 현업적용 의도에 유의미한 영향을 미쳤다. 그리고, 교육 효과에는 편리성, 심미적 체험이 유의미한 영향을 미쳤지만 몰입감, 다양성은 유의미한 영향을 미치지 않았다. 인터뷰에서는 VR 교육은 체험자 만족도가 높고 교육의 효과도 좋다는 의견을 제시하였다. 콘텐츠의 품질은 VR 교육의 중요한 요소로 특히 몰입감과 편리성이 중요하다고 하였다. 중장기적으로는 체험관의 인력, 전문성, 유지 보수 문제, 재난 분야별 표준 교수안 마련 등 필요하다고 하였다. 결론:본 연구 결과를 통해 VR 콘텐츠 품질이 행동 의도와 교육 효과에 영향을 미친다는 것과 VR 교육의 효과 증진을 위해 콘텐츠 품질 향상을 위한 노력과 투자가 필요하다는 것을 확인할 수 있었다. 그리고 인터뷰에서 도출된 내용은 효과적인 소방안전체험관 운영에 도움이 될 것이다.

• 서비스연구
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• 제13권2호
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• pp.227-245
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• 2023

기존 유통기업과 플랫폼을 중심으로 한 신생기업들이 언택트 쇼핑에서 만나면서, 언택트 쇼핑 안에서 기업들의 경쟁이 더욱 치열해지고 있다. 이러한 상황에서 기업들은 자사만의 확실한 전략이 필요하다. 언택트 쇼핑에서 전략을 수립하기 위해서는 '고객경험'을 살펴보는 것이 매우 중요하다. 고객경험은 소비자가 기업이나 브랜드 등을 서비스 접점에서 만나 경험하는 모든 과정을 의미한다. 이 과정에서 소비자는 해당 기업과 브랜드를 지속이용 할 것인지를 판단한다. 본 연구는 언택트 쇼핑의 고객경험을 경험 품질을 통해 살펴보고, 기대일치 모델에 미치는 영향을 살펴보고자 하였다. 본 연구의 중요한 결과는 다음과 같다. 첫째 상호작용품질, 정보품질, 결과품질이 기대일치에 영향을 미치는지 살펴본 결과 상호작용품질을 제외한 모든 품질이 기대일치에 영향을 미치는 것으로 나타났다. 둘째 상호작용품질, 정보품질, 결과품질이 지각된 유용성에 영향을 미치는지 살펴본 결과 역시, 상호작용 품질을 제외한 모든 품질이 영향을 미치는 것으로 나타났다. 결과를 살펴보면 정보품질이 가장 크게 영향을 미치는 것으로 나타났다. 이는 언택트 쇼핑을 이용하는 소비자의 기대일치, 지각된 유용성 등을 충족하기 위해서는 정확하고 적합한 정보를 제공하는 것이 가장 중요하다는 것을 알 수 있다. 다음으로 기대일치 모델 내에서 기대일치가 지각된 유용성에 영향을 미치는지 살펴본 결과, 영향을 미치는 것을 알 수 있다. 또한 기대일치가 이용만족에도 영향을 미친다는 것을 알 수 있으며, 지각된 유용성이 이용만족에도 지지 되는 것을 확인 할 수 있다. 따라서 언택트 쇼핑에 관련된 고객경험 전략을 수립할 때 정보품질, 기대일치, 지각된 유용성이 가장 중요한 요인이기 때문에 이를 중심으로 관련된 전략을 수립하는 것이 필요하겠다.

• 정보과학회 논문지
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• 제44권4호
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• pp.423-432
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• 2017

최근 HTTP 적응적 스트리밍 서비스의 표준인 DASH(Dynamic Adaptive Streaming over HTTP)를 기반으로 하는 비디오 스트리밍 서비스의 QoE(Quality of Experience) 향상을 위해 비디오 품질 조절 기법들이 연구되고 있다. 그러나 기존 기법들은 비디오의 VBR(Variable Bitrate) 특성에 대한 고려가 부족하여 불필요한 품질 변화로 인해 QoE가 저하되는 문제를 발생시킨다. 본 논문에서는 세그먼트 특성을 기반으로 품질을 조절하는 SC-DASH(Segment Characteristics-based DASH)를 제안한다. SC-DASH는 다음에 요청할 세그먼트의 크기, 세그먼트 처리량, 그리고 버퍼 점유율을 기반으로 비디오 품질을 조절하여 불필요한 품질 변화가 발생하는 것을 방지한다. 실험 결과를 통해 SC-DASH가 기존 기법보다 불필요한 품질 변화를 감소시킴으로써 QoE를 향상시키는 것을 확인하였다.

• Journal of Information Technology Applications and Management
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• 제21권4호
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• pp.15-33
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• 2014

Recently, the service providers are making various attempts to provide smartphone applications for waiting information in order for customers to perceive waiting time short. This research, therefore, investigates the impact of smartphone use on the waiting experience and provide service organizations with effective measures for managing customers' waiting. As a result of this study, utilization of smartphone during the waiting period shows the positive impact on perceived waiting time, acceptability, and emotional response. Among these, the largest impact appears on the acceptability of waiting that has the largest impact on the perceived service quality. In addition, results reveal that smartphone users shows more positive waiting experience than non-users who read newspapers or magazines, watch TV, or do nothing.